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/*
* Fake Perms VFS module. Implements passthrough operation of all VFS
* calls to disk functions, except for file permissions, which are now
* mode 0700 for the current uid/gid.
*
* Copyright (C) Tim Potter, 1999-2000
* Copyright (C) Alexander Bokovoy, 2002
* Copyright (C) Andrew Bartlett, 2002
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "smbd/smbd.h"
#include "system/filesys.h"
#include "auth.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_VFS
static int fake_perms_stat(vfs_handle_struct *handle,
struct smb_filename *smb_fname)
{
int ret;
ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
if (ret != 0) {
return ret;
}
if (S_ISDIR(smb_fname->st.st_ex_mode)) {
smb_fname->st.st_ex_mode = S_IFDIR | S_IRWXU;
} else {
smb_fname->st.st_ex_mode = S_IRWXU;
}
if (handle->conn->session_info != NULL) {
struct security_unix_token *utok;
utok = handle->conn->session_info->unix_token;
smb_fname->st.st_ex_uid = utok->uid;
smb_fname->st.st_ex_gid = utok->gid;
} else {
/*
* We have an artificial connection for dfs for example. It
* sucks, but the current uid/gid is the best we have.
*/
smb_fname->st.st_ex_uid = geteuid();
smb_fname->st.st_ex_gid = getegid();
}
return ret;
}
static int fake_perms_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
{
int ret;
ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
if (ret != 0) {
return ret;
}
if (S_ISDIR(sbuf->st_ex_mode)) {
sbuf->st_ex_mode = S_IFDIR | S_IRWXU;
} else {
sbuf->st_ex_mode = S_IRWXU;
}
if (handle->conn->session_info != NULL) {
struct security_unix_token *utok;
utok = handle->conn->session_info->unix_token;
sbuf->st_ex_uid = utok->uid;
sbuf->st_ex_gid = utok->gid;
} else {
/*
* We have an artificial connection for dfs for example. It
* sucks, but the current uid/gid is the best we have.
*/
sbuf->st_ex_uid = geteuid();
sbuf->st_ex_gid = getegid();
}
return ret;
}
static struct vfs_fn_pointers vfs_fake_perms_fns = {
.stat_fn = fake_perms_stat,
.fstat_fn = fake_perms_fstat
};
NTSTATUS vfs_fake_perms_init(void);
NTSTATUS vfs_fake_perms_init(void)
{
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "fake_perms",
&vfs_fake_perms_fns);
}
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